1. Lacking brilliance or vitality
   "a dull lacklustre life"
   - lackluster [US], lusterless [N. Amer], lustreless [Brit, Cdn] 
2. Lacking lustre or shine
   "staring with lacklustre eyes"
   - lackluster [US], lusterless [N. Amer], lustreless [Brit, Cdn]

See also: dull, hebetudinous

• rose-coloured starling
• rose-cut
• rose-lavender
• rose-lilac
• rose-mauve
• rose-purple
• rose-red
• rose-root
• rose-tinged
• rose-tinted
• roseate
• roseate spoonbill
• Roseau
• rosebay
• rosebay willowherb
• rosebud
• rosebud cherry
• rosebud orchid
• rosebush
• rosefish
• rosehip
• rosella
• roselle
• Rosellinia
• rosemaling